Pixels reduced to 640x480 week ago on 16 colors. Since then have tried: Download / install new drivers (NVidia Vanta LT) / Restore to month earlier, then a complete restore to factory settings / Switching monitor and cable / Wiggle and take out and replace video card / BIOS check - (AIDA 32 said over 2 yrs old but compaq has no updates on site). Full virus check (-ve) Exclamation mark by display adaptor but refuses to be deleted. Is it time to give up and buy a new video card?
I don't think you installed the drivers correctly. Which version of Windows are you running? Are you downloading theDetonator drivers straight from nVidia? There's nothing wrong with the TNT2-series boards for basic video, unless you are running high-impact games or doing fancy graphics rendering.
The most recent versions of nV drivers must be removed via the Add/Remove Programs menu, or you will get version conflicts. If it does not show in the menu, earlier versions must be removed using a tool appropriate for your version of Windows. A good selection of drivers and tools are available at at http://www.Guru3D.com/download .
More information, please.
TallCool1
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